Steam-engine for locomotives.



H. LENTZ.

STEAM ENGINE FOR LOCOWUTIVES. MPL10/111011. 1111511 11111.15. 19154 RENEWED oc1.2.1916.

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STEJi-li GENE FR LOCMOTIVES.

'whom t may concern:

. it fnoivn that Lllnoo Learn, a citizen man Empire, and resident of Berensee, Germany, have invented cerand useful Improvements in Steamfor Locomotives, of which the folis a specification.

invention. relates to innnovements in e'i nes for locomotives, and the object of this class in which the steam'cylinder and tilt.` steam chest consist. of a casting' of sim vple lorm which can be made at coiupara- 'lively lou.' cost, and in which the steam cylins der and its supporting plate or saddle can readilyY he secured to the frame `.vork of the locomotive. :i further object of the im- .ints is to construct the cylinder and i 4n chest in such a Way, that there is no ssion of heat between the steam chambers. so that the said chambers are ini from each other. Finally an object i Aents is to provide a steam the shaft controlling lthe tion, so that the said shaft n; he mounted on the team chest and 'for tightening the as of 'thestam 'liest are not lilith. these and other objects v:in view n J invention consists in constructing the steam cylinder, its supporting. plate or saddle, and the steam chest in such. a `Nay,

le cylinder 'which is'disposed at a disfrom the supporting plate or saddle e chest inclosing the shaft controlling andthe steam admission and eX- inbers are disposed separately of 4r, said chambers being provided casing inclosing said shaft. For eexnaust chamber and the oaste with each other, so that the on the sait shaft are in 'l rfnese of explaining the invenerzain le embodying the same has the accompanying drawing, in u ich the same letters of reference have been used in all the vieWs to indicate correspendinv' parts. ln saidrdrawing- Figure 1, is a longitudinal section of the cyiinder and associated parts7 the left l part ci figure being a section taken aline of Fig.' 2, andthe rg t hand et e ligure being a section taken on .line TW? of Fig. 2, and l tion been shown in Specification of Letters Patent.

niprm'ements is to provide an engine Patented May 8,1217'.

leatien tiled January 6, 1915, Serial No. 71?. Renewed October 2, 1916. Serial No. 123,447.

Fig. 2, isa cross-section taken on the line ll-H of Fig. 1.

Referrin o' to the example illustrated in the drawing7 tie steam cylinder 2, its supp0rt ing plate or saddle 1, and the valve chest 4 consist of an integral castino. The supporting plate 1 is adapted to be secured to the frame of a locomotive by screw bolts or the like, and it is formed with ribs 3 which are made integral with the steam cylinder 2, the latter being disposed at a distance from the supporting plate. Above the steam cylinder 2 and perfectly separate therefrom and cast integral with the'supporting plate 1 the casing 4 is provided which receives a shaft 22 controlling' admission and exhaust valves 7 and 15, and the bore of the said casing is perpendicular to the supporting plate l and a plane passing through the axis f the cylinder.

Above the casing 4 and at the side which is away from the supporting plate 1 a steam admission chamber is formed to which live steam is admitted through a short pipe 6. The live steam chamber 5 communicates through ports 8 controlled by the admission valves 7 with passages 16 connected With the hollow of the cylinder at opposite ends thereof, as is shown at the left in Fig. 1.

The admission valves which are formed With tivo faces are acted upon by springs 9 and secured to stems l0 which are guided in a steam tight manner in bushings 11 formed with annular grooves. The bushings are fitted Within the bores of cylindrical parts 26 providing guides for the valve shafts, Which bores end perpendicularly in the casing 4 of the shaft 22. The cylindrical parts 26 are vdisposed perfectly independently of the Walls of the live steam chamber 5 and below the same, so that transmission of heat can not take place.

At the side or' the live steam chamber 5 the exhaust steam chamber 13 is provided which is located around the casing 4 of the valve shaft and extends over the Whole length of the cylinder. It is formed with a pipe 14- to which the exhaust steam pipe is connected.V -The live steam chamber and the exhaust steam chamber are perfectly separate from each other, so that transmisswn of heat cannot take place. The endsof the exhaust steam chamber 13 communicate through ports controlled by the exhaust valves 15 with the passages 16. The exhaust valves are formed with two faces, and

Y exhaust chamber 13- are always lin communication with eachother through a bore 2l.;-

'lherehy any steam which might pass along the valil'e'steins l0 and 1S is removed, and

f r-:iniultaneously the pressures acting on the Avalve shaft' 22 are balanced, so that special' lightening means are not necessary for thisyshall. .ly means ofthe valve gearing rockiiigf'im'iveuieni is imparted to the valve shaft,

as is h'noujnfin the art`r and the? valve shaft is ioi'ined with rains 225 au'd ior operating respectively the admission and exhaust valves T and l5.

lly construct-ing the s'lcain cylinder and the parts associated therewith 4iu the Amaiiiier deserihed a-easting is obtained which is simple in torni and can easily he manufactured. The, casting can readily he secured to the 'li'anie of the loconiotivqand :ready access can always he had 'to 'the screw bolts provided for this purpose. The cylinder is freely supported hy the ribs 3 and it is coniiected with the casinginclosing the valve sha't't andthe steam chambers exclusivelythrough the walls ot the passages l6,this

"connection being such thatk any transmission of heat between the steam chanibeisis avoided and ille parts of the cylinder are insulated ii'onioiie another in the most simple. ivay. 'lhis is particularly important in steam engines l" r locomotives which are driven hy super-heated steam.

-lly conuecting'the casing inclosing the valve shalt with the exhaust chamber the valve chamber is released .from fessure acting,r in one direction, so thattlie said valve shaft can easily he mounted and Special tiglitening` means are net ii'ecessary l claim herein as my invention:

1. ln a steam engine'ior locomotives and the like, the combination vwith a supporting pla-te, yof a steiim cylinder disposed at a;

distance from the supporting plate, valves and means including a shaft for operating the same, and a casing providing a support (for the valvesliaft, said casingheing disposed independently o f vthe cylinder and lui-rings` steam admission and exhaust chainhers arranged about the saine and independently of the cylinder.

lo a steam engine for locomotives and the lil e,4the combination with a supporting plate, of a steam cylinder disposed at distance from the supporting' plate, valves nieaiisincluding a shaft "for operatingthe saine, a casing proyidiiig` a support for the valve shaft, said casingl being disposed iiidependently of the cylinder, and at least one chest surrouiuling the easing of the valve shaft and having its inner tance fromthe casing and providing admission and "exhaust chainhei's.

l. ln a 'steam engine for locomotives and the like, the ci'iinhnation with a supporting plate, of a steam cylinder disposed at a dis; tance Jfrom the suiiporting plate, valves and means including` a shaft for operating the sanie, a easing` providing a support for the valve sliai't, said casinpgl-eing disposedindependently of the cylinder, and admission and exhaust chests surrounding said casing and disposed Withtheir inner alls at a distance fromthe casing.

5. In a steam engine foi" locomotives and the like, theconibination with a supporting plate, of a steam eylinder'dis'posed at a dis'- tance from the supporting plate, valves and .means including-a shaft for operating the same, and a casing providing la support for the valve'shaft, saidcasing being disposed independeiitly of the cylinder and having steam admission and exhaust chambers arranged abouttlie same and independently of l the cylinder, said casing 4communicatz'inlgf with the exhaust chamber.

In testimony whereof, have signed this speei'cation inthe pre-sence of two suoscribing witnesses.

` HUGOLENTZ.

l/Vitnes'ses:

/VonoiiiiiAiiHAn'rr, HENRY- HAsrnii.

yall. at a dis- 

